package com.hmdp.utils;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.util.StrUtil;
import com.hmdp.dto.UserDTO;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Map;
import java.util.concurrent.TimeUnit;

/**
 * @Author: Bin
 * @description:
 * @date: 2025-07-10 16:37
 */
@Component
public class RefreshTokenInterceptor implements HandlerInterceptor {

    @Resource
    private StringRedisTemplate stringRedisTemplate;

    private String Authorization = "Authorization";

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String token = request.getHeader(Authorization);
        if (StrUtil.isBlank(token)) {
            return true;
        }
        String key = RedisConstants.LOGIN_USER_KEY + token;
        Map<Object, Object> userMap = stringRedisTemplate.opsForHash()
                .entries(key);
        if (userMap.isEmpty()) {
            return true;
        }
        UserDTO userDTO = BeanUtil.mapToBean(userMap, UserDTO.class, false);
        UserHolder.saveUser(userDTO);
        Long expire = stringRedisTemplate.getExpire(key, TimeUnit.MINUTES);
        //更新user登陆有效期
        if (expire < 10L) {
            stringRedisTemplate.expire(key, RedisConstants.LOGIN_USER_TTL, TimeUnit.MINUTES);
        }
        return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        HandlerInterceptor.super.afterCompletion(request, response, handler, ex);
    }
}
